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We’re pleased to announce that Factorenergia is now part of the SmartestEnergy Group. Learn more about the acquisition in our full announcement.

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Low energy mode

A resilient and bankable partner you can trust

With the global financial backing and ongoing support of our parent company, our consumers, brokers and generators can have complete confidence that we’re a secure partner for the long term.

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    # 119 298
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    20000 50000 +
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    $ 25 61.7 bn

A powerful history 

1858

Marubeni founded by Chubei Itoh (1842-1903) when, age 15, he began business trips to deal in linen cloth.  

1949

Marubeni Corporation incorporated, and the following year listed shares on the Osaka Securities Exchange and Tokyo Stock Exchange.  

2001

Marubeni acquired a stake in SmartestEnergy Limited, adding an asset-light renewable energy company to its portfolio. 

2008

SmartestEnergy Limited entered the UK supply market, powering large businesses and Commercial and Industrial customers with renewable energy. 

2019

We acquired our UK SME supply business, SmartestEnergy Business, and SmartestEnergy US LLC launched, opening our first international office in Syracuse, New York  

2020

SmartestEnergy entered the Australian supply market, opening our second international office in Sydney, Australia. 

2024

With a 20+ year history of driving energy markets forward, SmartestEnergy is now an established, robust organisation with a wealth of experience empowering the global net zero transition.